Panel switch and cut-out.



PATENTS!) MAY 8, 1906.

m. szome. V a. TRUMBULL.

m1. swrmn AND a UT OUT.

APS'LIQEIIDF FILED MAY 25. 1804.

UNITED STATES PATENT OFFICE.

JOHN H. TRUMBULL OF PLAINVILLE, CONNECTICUT, ASSIGNGR TC THE TRUMBULL ELECTRIC MANUFACTURING COMPANY, OF PLAINVILLE, CONNECTICUT, A CORPORATICil D)? CONNECTICUVF.

PANEL swrrohi Asia cuT-ouT.

Specification of Letters Patent.

Patented May S, 1906.

Lpplirztion filed May 25, 1904. Serial No. 205L674.

To all] whom it may concern;

Bo it known that I, JoHN H. TRUMBULL, a citizen of tho United States, and a resident of Plainvillc, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Panel Switches and Cut-Outs, of which the following is a specification.

The invention relates to cut-outs, and more particularly to a specific form of cut-out which combines both an automatic cut-out feature and a manually-operated cut-out for electric circuits.

The object of the invention is to forin a Y 5 compact sun ple device which may be arranged in scvcrcl combined units for controlling Va,- rious circuits and which may be used either with a two wire system or three-wire system of clcctrica-l distribution without change in the arrangement of the specific parts.

A further object is-to combine in ii single structure: an automatic cut out and immuullywpcrated cut-out for controlling an cloctric circuit and to arrange the line-wire con- 2 5 moot-ions for said combination so that they will lie in parallelism.

Referring to tho rlmwin s, Fi ure 1 illustrn-tcs a pose! with sovers of t vc units appliod thereto. Fig. 2 is a plan view of one of the units. Fig, 3 1s a. sectional view through the line-wire connection and automatic cutout. 7

It has long hcen the practice to provide'hutonmtic cut-onts, and of coursc it is common practice to provido a switch for controlling an electric circuit.

It is ono of the objects of the present invention to combine in a. single structure an autorustic cutout and switch and. so crrangothc 40 parts that the dcvicc may be used with other similar do a for controlling various circuits and i, sy be used cithcr on c two-wirc o1 three-wire: system of clcctricui distribution Without change in tho structure.

In the accompanying drawings, the numcrul 1 dcnotcs :1. panel, such is ordinaril used to support cut-out devices or contro ling dcviccs for u numbcr of circuits. Upon this pancl 1 hrs mcuntcd a numlzcr 1)! basepieces 2, formcd of insulating material and with tlicir lino-wire conn cli ms urrsngcd fl-(ljaccnt to (rich other:

For tho purpucvs h ra-in rcquircd u singlc base-piece and appurtenant parts arc dcscribed. Each base 2 of insulstin material has formed upon it insulated cup-Ii o projec t'fims 3, withm which are arranged contactcups 4. These cups are held Within tho rcccsses by studs 5, coopcratingwith washers 6, and suitable insulating plates. The cups form one of a, pair of contact mcmhers and are connected with bars 7, which terminate at one end in switch contacts 8! These switch-contacts cooperate with swit h-blades ivotcd in clips 10, the latter provided with inding-scrcws 11 for the attachment of circuitw'ircs. The cup-like recesses 3 are open at one side, as at 3, and have a roovs at their base which extends Without t e recess and forms a pocket 3*, Within which the bars 76 7 are arranged. A web of insulutiil material 12 is nrrnngcd between the two b odes of the switch and separates the two blades of the switch as well as the contacts tlmrefor.

Transverscly arranged ononc end of the insulstingdiasc 2 are grooves 13 14, and into these grooves project contact members of clamp form which are conncctcd with the studcontects 5 of the cut out nicmliers which are arranged in the cup-likc projections. One of these contacts projects under one of the grooves through the base of insu- 'lating'materia'hand thus the two grooves are each providcdwith means for attaching line- Wires and at the 3&1110 time said wires whorc 8 the insulation is cutofi' to cfiect a contact arc isolated one from the other. i The clump members 15, which lic in these grooves, are roferably formed in two parts, one of which Eendsdownwsrd and cxtcnds through tho base to connect with tho cut-out contuctstud and the other being loosely attached thereto by screws 16, which also scrvc for clam iing tho parts to cthor and scouring the meovircs. In usc tho insulatcd' bases, 5 with thoir nppurlmuint purls, arc placed end to end with their lino-wire grooves parallel with each other. By this arrangement a number of these combined cnt outs and switch devices may lac rcmlily uscd ci'tlicr on two-wirc connections, as shown in full lines in Fig. 1, or for thrcc-wirc circuits, as indicated in dotted lines. Of course it is unrlcrstood that lug 111G111- bcrs hearing a suitable fuss arc arranged to ho inscrtcd in the cylindrical contact monk hers 4, which lie within the tul'iular or cup" ,end of the base, so that the scrviewlincs al e am 1y protected by the automatic fuses.

he fuse-plugs are not shown herein, they being well known in the art, and it deemed sufficient to state that said plugs form a connection through. a fuse-wire between the contactc ups 4 and the studs 5, so that there is an electrical connection between the clips of the wire-grooves oi the base and the switch.

Obviousl changes might be made in the details of t. e construction and arrangement without departing from the spirit or intent of the invention, which contemplates the com-- bination of a ,lnanually-operated circuitbreaker, an aut'rinatic circuit breaker, and isolated line-grooves a purtenant thereto and transversely arrange with respect to the connections between the automatic lJI'GFkliOI and manually-operated breaker or switch. It is to be noted also that the transverse arrangement of the line-wire greet s in. the iii-- sulated base is such that the connections from said line-wires are absolutely isolated one from the other, though thcy'pass directly to the automatic circuiii-breaking cups, and in the same way the conductor members from said cups are located within recesses in the base of insulating material and extend directly to the contact members of the switch.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a circuit-controlling device, in combination, a base or panel, separately formed, and removable bases or panels mounted thereon in extension one of another each having rooves for line-wires arranged trans verse y thereof near their adjoining ends, circuit-wire terminals at oppositecnds of each of said removable bases from said grooves, and electrical connections between the circuit-wire terminals and line-wire moves for conducting a current from the inc-wires to the circuit-wires.

2. In combination in a circuit-controlling device, a panel, a pluralityof removablcinsulating-bases mounted side by side thereon with transversely-moangod registering line Wire grooves, means for securing line-wires in the said grooves, circuitwire terminals at the opposite end of each of the removable insulated bases from the grooves, and electrical connections between the eircuit-tcrminals and line-wire grooves for conducting a flow of current from the lino-wires to the circuitwires.

3. In a circuit-controlling device, in cone hinatien, a base or panel, a plural number of removable insulated bases arranged on said panel side b side and. in rows touching each other, the adjacent ends of the panels in each row having transversely-arranged linewire grooves, circuit-wire terminals at the op 0- sin, end of each of the removable bases, e eci-ricni connections between. the circuit-wire terminals and line-wire g coves for controlling, theflow of current frm the line-wires to the circuitwires.

4. In a circuit-controlling device, a base of insulating material, cup-like recesses formed on said base, open on one side and communieating with a ocket in the base, switch-contents arrangedhn said pockets, a pair of contact members insulated one from the othel arranged in each of the cup-like recesses, coiiductors extending from one of said contact members to the switch-contacts and from the other to wire-clamping devices, and line-wire grooves extending parallel to each other transversely across the base.

5. In acircuitmontrolling device, a base of insulating material having circuit-contactwire recesses formed at one end and transverselyarranged parallel line-wire grooves extending thereacross, cup -like recesses formed on the base and open on one side communicating with'pockets in the base,'a projection from the upper surface of the base extending from between the circuit-wire recesses to a point between the switch-contact pockets, terminals secured within the circuit wire recesses, knife-switch contacts within their pockets, at knife-switch ivoted to the.

circuit-wire contacts, .1 pair 0 contact members arranged in the cup-like recesses, conductors extmuling from one of said contact members to the switch-contact and from the other of said contact members to wire-clamping devices in the line-wirc grooves, and the w irc-clan1ping devices.

JOHN H. TRUMBULL. \Vimcsses:

WMJH. BARKER, LENA E. BERKOVITCH. 

